1 //===-- llvm/Instrinsics.h - LLVM Intrinsic Function Handling ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines a set of enums which allow processing of intrinsic
11 // functions. Values of these enum types are returned by
12 // Function::getIntrinsicID.
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_INTRINSICS_H
17 #define LLVM_INTRINSICS_H
21 /// Intrinsic Namespace - This namespace contains an enum with a value for
22 /// every intrinsic/builtin function known by LLVM. These enum values are
23 /// returned by Function::getIntrinsicID().
27 not_intrinsic = 0, // Must be zero
29 // Varargs handling intrinsics.
30 vastart, // Used to implement the va_start macro in C
31 vaend, // Used to implement the va_end macro in C
32 vacopy, // Used to implement the va_copy macro in C
34 // Code generator intrinsics.
35 returnaddress, // Yields the return address of a dynamic call frame
36 frameaddress, // Yields the frame address of a dynamic call frame
38 // setjmp/longjmp intrinsics.
39 setjmp, // Used to represent a setjmp call in C
40 longjmp, // Used to represent a longjmp call in C
41 sigsetjmp, // Used to represent a sigsetjmp call in C
42 siglongjmp, // Used to represent a siglongjmp call in C
44 // Garbage Collection intrinsics.
45 gcroot, // Defines a new GC root on the stack
46 gcread, // Defines a read of a heap object (for read barriers)
47 gcwrite, // Defines a write to a heap object (for write barriers)
49 // Debugging intrinsics.
50 dbg_stoppoint, // Represents source lines and breakpointable places
51 dbg_region_start, // Start of a region
52 dbg_region_end, // End of a region
53 dbg_func_start, // Start of a function
54 dbg_declare, // Declare a local object
57 // Standard libc functions.
58 memcpy, // Copy non-overlapping memory blocks
59 memmove, // Copy potentially overlapping memory blocks
60 memset, // Fill memory with a byte value
62 // libm related functions.
63 isnan, // Return true if fp argument is a NAN.
65 // Input/Output intrinsics.
71 //===------------------------------------------------------------------===//
72 // This section defines intrinsic functions used to represent Alpha
75 alpha_ctlz, // CTLZ (count leading zero): counts the number of leading
76 // zeros in the given ulong value
78 alpha_cttz, // CTTZ (count trailing zero): counts the number of trailing
79 // zeros in the given ulong value
81 alpha_ctpop, // CTPOP (count population): counts the number of ones in
82 // the given ulong value
84 alpha_umulh, // UMULH (unsigned multiply quadword high): Takes two 64-bit
85 // (ulong) values, and returns the upper 64 bits of their
86 // 128 bit product as a ulong
88 alpha_vecop, // A generic vector operation. This function is used to
89 // represent various Alpha vector/multimedia instructions.
90 // It takes 4 parameters:
91 // - the first two are 2 ulong vectors
92 // - the third (uint) is the size (in bytes) of each
93 // vector element. Thus a value of 1 means that the two
94 // input vectors consist of 8 bytes
95 // - the fourth (uint) is the operation to be performed on
96 // the vectors. Its possible values are defined in the
97 // enumeration AlphaVecOps.
99 alpha_pup, // A pack/unpack operation. This function is used to
100 // represent Alpha pack/unpack operations.
101 // It takes 3 parameters:
102 // - the first is an ulong to pack/unpack
103 // - the second (uint) is the size of each component
104 // Valid values are 2 (word) or 4 (longword)
105 // - the third (uint) is the operation to be performed.
106 // Possible values defined in the enumeration
109 alpha_bytezap, // This intrinsic function takes two parameters: a ulong
110 // (64-bit) value and a ubyte value, and returns a ulong.
111 // Each bit in the ubyte corresponds to a byte in the
112 // ulong. If the bit is 0, the byte in the output equals
113 // the corresponding byte in the input, else the byte in
114 // the output is zero.
116 alpha_bytemanip,// This intrinsic function represents all Alpha byte
117 // manipulation instructions. It takes 3 parameters:
118 // - The first two are ulong inputs to operate on
119 // - The third (uint) is the operation to perform.
120 // Possible values defined in the enumeration
123 alpha_dfpbop, // This intrinsic function represents Alpha instructions
124 // that operate on two doubles and return a double. The
125 // first two parameters are the two double values to
126 // operate on, and the third is a uint that specifies the
127 // operation to perform. Its possible values are defined in
128 // the enumeration AlphaFloatingBinaryOps
130 alpha_dfpuop, // This intrinsic function represents operation on a single
131 // double precision floating point value. The first
132 // paramters is the value and the second is the operation.
133 // The possible values for the operations are defined in the
134 // enumeration AlphaFloatingUnaryOps
136 alpha_unordered,// This intrinsic function tests if two double precision
137 // floating point values are unordered. It has two
138 // parameters: the two values to be tested. It return a
139 // boolean true if the two are unordered, else false.
141 alpha_uqtodfp, // A generic function that converts a ulong to a double.
142 // How the conversion is performed is specified by the
143 // second parameter, the possible values for which are
144 // defined in the AlphaUqToDfpOps enumeration
146 alpha_uqtosfp, // A generic function that converts a ulong to a float.
147 // How the conversion is performed is specified by the
148 // second parameter, the possible values for which are
149 // defined in the AlphaUqToSfpOps enumeration
151 alpha_dfptosq, // A generic function that converts double to a long.
152 // How the conversion is performed is specified by the
153 // second parameter, the possible values for which are
154 // defined in the AlphaDfpToSqOps enumeration
156 alpha_sfptosq, // A generic function that converts a float to a long.
157 // How the conversion is performed is specified by the
158 // second parameter, the possible values for which are
159 // defined in the AlphaSfpToSq enumeration
162 } // End Intrinsic namespace
164 } // End llvm namespace